spx stone hydraulic pump troubleshooting free sample

Spx stone hydraulic pump troubleshooting is a big problem for the client. Believe me, because i have faced this problem so many times before. I’m sure you also know how difficult it is. For this reason, the spx stone hydraulic pump troubleshooting manual was created to help you diagnose and repair spx stone hydraulic pump troubleshooting quickly, easily and effectively. This hydraulic pump troubleshooting guidelines will first make a detailed introduction of spx stone hydraulic pump troubleshooting, then study the symptoms, causes (mainly three causes), and ways to solve it from different aspects.

*Check for system leaks by using a hand pump to apply pressure to the suspect area.Watch for leaking fluid and follow it back to its source. Never use your hand or other body parts to check for a possible leak.

We have prepared a very detailed spx stone hydraulic pump troubleshooting form for you, in which the problems and solutions correspond one by one, I believe that 90% of the problems can be solved as long as you check the form below.

Problem 2-Spx Stone Hydraulic Pump is not delivering hydraulic fluid or delivers only enough hydraulic fluid to advance cylinder(s) partially or erratically

Motor rotating in wrong directionReverse rotationSpx Stone Hydraulic Pump is not delivering hydraulic fluid or delivers only enough hydraulic fluid to advance cylinder(s) partially or erratically.

Inspect the pump for internal leakageSame procedure as above but for leaks around the entire inner mechanism. If there are no visible leaks the low-to-high pressure ball check may be leaking. Remove all parts. Inspect the check body for any damage to the seat areas. Clean and reseat if necessary. Inspect the ball for damages and replace if necessary, then reassemble.

Hydraulic fluid being splashed by counter weight.Lower hydraulic fluid level to approximately 38 mm (1.5 inches) below the cover plate.Foaming hydraulic fluid

High pressure hydraulic fluid is leaking past the low-to-high pressure check. This hydraulic fluid leaks back to the piston in the automatic valve, keeping the piston closedSeat the ball check. Inspect and replace any faulty components.Automatic valve will not release pressure

The SPX Power Team hydraulic pump is a great way to store and transport your compressed air. It has a capacity of up to 5 cubic feet, which allows you to store enough air for several jobs at once. The SPX Power Team also comes with a convenient pressure gauge so that you can monitor how much pressure is in the tank at any given time.

The SPX stone hydraulic pump wiring diagram is shown in the figure below. The SPX stone hydraulic pump has a simple control circuit that is made up of two switches, two relays and a few other components. The following figure shows the basic schematic diagram of the control circuit used in the stone hydraulic pump:

The above-mentioned SPX stone hydraulic pump has an electrical motor, which is connected to a voltage supply through its terminals. This motor drives a gearbox which transfers power to a piston that is enclosed in a cylinder. When this piston rotates, it produces pressure at its opposite end that can be used to perform various tasks such as lifting or lowering heavy loads. The speed of rotation and the amount of pressure generated are both controlled by adjusting the voltage and current supplied to the motor terminals.

Seivom stone pump troubleshooting FAQ: an FAQ page outlining all the possible things you can run into when using and troubleshooting a spx stone pump.

If you are a person who is familiar with hydraulic pumps then you will know that they have many applications. A hydraulic pump will be used in different industries such as the construction industry, mining industry and many more. The main purpose of these pumps is to provide the users with a source of power which will help them to perform their tasks easily. This article is going to discuss about Spx Power Team Hydraulic Pumps and how to troubleshoot them.

Spx Power Team Hydraulic Pumps can be used for various reasons such as for industrial use, agriculture use and even for domestic purposes. The main advantage of using this product is that it provides you with an easy way of performing your task without any hassle. For example if you want to lift something heavy then these pumps can help you easily lift the object without any problems.

The manual covers troubleshooting, repair procedures, maintenance and inspection. The manual also includes a wiring diagram, which shows how to install the pump and connect it to other components.

The Spx Stone/Fenner 12VDC Double Acting Hydraulic Power Unit is a high performance pump that can be used for a variety of applications. This pump can be used for anything from agricultural and industrial uses to marine and recreation purposes. The pump has an oil capacity of 500ml, which makes it easy to refill when necessary. It also features a metal casing with a protective top cover that helps protect the internal components from damage.

This pump comes with an adjustable flow rate control valve as well as a pressure gauge on the front panel so you can easily monitor your operation. The pump comes with its own carrying handle so you can easily transport it to wherever you need it most!

Things like restrictions and blockages can impede the flow of fluid to your pump. which could contribute to poor fluid flow. Air leak in suction line. Air present in the pump at startup. Insufficient supply of oil in pump. Clogged or dirty fluid filters. Clogged inlet lines or hoses. Blocked reservoir breather vent. Low oil in the reservoir

Now that we’ve ensured that the directional control is not reversed, it’s time to check that the drive motor itself is turning in the right direction. Sometimes incorrect installation leads to mismatched pipe routings between control valves and motors, which can reverse the direction of flow. Check to see that the motor is turning the pump in the right direction and if not - look at your piping.

Check to ensure that your pump drive motor is turning over and is developing the required speed and torque. In some cases, misalignment can cause binding of the drive shaft, which can prevent the motor from turning. If this is the case, correct the misalignment and inspect the motor for damage. If required, overhaul or replace motor.

Check to ensure the pump to motor coupling is undamaged. A sheared pump coupling is an obvious cause of failure, however the location of some pumps within hydraulic systems makes this difficult to check so it may go overlooked

It is possible that the entire flow could be passing over the relief valve, preventing the pressure from developing. Check that the relief valve is adjusted properly for the pump specifications and the application.

Seized bearings, or pump shafts and other internal damage may prevent the pump from operating all together. If everything else checks out, uncouple the pump and motor and check to see that the pump shaft is able to turn. If not, overhaul or replace the pump.

If your pump is having problems developing sufficient power, following this checklist will help you to pinpoint the problem. In some cases you may find a simple solution is the answer. If your pump is exhibiting any other issues such as noise problems, heat problems or flow problems, you may need to do some more investigation to address the root cause of your pump problem. To help, we’ve created a downloadable troubleshooting guide containing more information about each of these issues. So that you can keep your system up and running and avoid unplanned downtime. Download it here.

The simplest form of directional valve, the check valve is often overlooked in the system. Sometimes they are hard to find since they may look a lot like a pipe junction or even a hex bolt. Many a good pump has been replaced only to find a check valve was stuck. Learn how the check valve can be used either as a directional control or a pressure control and what will happen if it fails. Pilot-to-open and pilot-to-close check valves are fully explained as well as demonstrating troubleshooting techniques. Learn in this class the six things most people don’t know about check valves and the failures they can emulate. Most importantly, the necessary safety measures that must be taken as these valves lock pressure in the system after shutdown.

Along with check valves, logic valves are included in this course. Learn how the logic valve is more conducive to high pressure systems than conventional hydraulic plumbing and valves. These valves can be the hardest component to diagnose unless you understand how to use the schematic to troubleshoot. Also discussed are the advantages and disadvantages of valves mounted in manifolds and the special techniques needed to effectively determine which valve is bad and how to properly flush the manifold whenever a valve is replaced.

We carry the entire Stone Hydraulics product line! We can ship any part or kit right to you in no time, so take a look around and feel free to contact us if you have any questions.

Check that the pump shaft is rotating. Even though coupling guards and C-face mounts can make this difficult to confirm, it is important to establish if your pump shaft is rotating. If it isn’t, this could be an indication of a more severe issue, and this should be investigated immediately.

Check the oil level. This one tends to be the more obvious check, as it is often one of the only factors inspected before the pump is changed. The oil level should be three inches above the pump suction. Otherwise, a vortex can form in the reservoir, allowing air into the pump.

What does the pump sound like when it is operating normally? Vane pumps generally are quieter than piston and gear pumps. If the pump has a high-pitched whining sound, it most likely is cavitating. If it has a knocking sound, like marbles rattling around, then aeration is the likely cause.

Cavitation is the formation and collapse of air cavities in the liquid. When the pump cannot get the total volume of oil it needs, cavitation occurs. Hydraulic oil contains approximately nine percent dissolved air. When the pump does not receive adequate oil volume at its suction port, high vacuum pressure occurs.

This dissolved air is pulled out of the oil on the suction side and then collapses or implodes on the pressure side. The implosions produce a very steady, high-pitched sound. As the air bubbles collapse, the inside of the pump is damaged.

While cavitation is a devastating development, with proper preventative maintenance practices and a quality monitoring system, early detection and deterrence remain attainable goals. UE System’s UltraTrak 850S CD pump cavitation sensor is a Smart Analog Sensor designed and optimized to detect cavitation on pumps earlier by measuring the ultrasound produced as cavitation starts to develop early-onset bubbles in the pump. By continuously monitoring the impact caused by cavitation, the system provides a simple, single value to trend and alert when cavitation is occurring.

The oil viscosity is too high. Low oil temperature increases the oil viscosity, making it harder for the oil to reach the pump. Most hydraulic systems should not be started with the oil any colder than 40°F and should not be put under load until the oil is at least 70°F.

Many reservoirs do not have heaters, particularly in the South. Even when heaters are available, they are often disconnected. While the damage may not be immediate, if a pump is continually started up when the oil is too cold, the pump will fail prematurely.

The suction filter or strainer is contaminated. A strainer is typically 74 or 149 microns in size and is used to keep “large” particles out of the pump. The strainer may be located inside or outside the reservoir. Strainers located inside the reservoir are out of sight and out of mind. Many times, maintenance personnel are not even aware that there is a strainer in the reservoir.

The suction strainer should be removed from the line or reservoir and cleaned a minimum of once a year. Years ago, a plant sought out help to troubleshoot a system that had already had five pumps changed within a single week. Upon closer inspection, it was discovered that the breather cap was missing, allowing dirty air to flow directly into the reservoir.

A check of the hydraulic schematic showed a strainer in the suction line inside the tank. When the strainer was removed, a shop rag was found wrapped around the screen mesh. Apparently, someone had used the rag to plug the breather cap opening, and it had then fallen into the tank. Contamination can come from a variety of different sources, so it pays to be vigilant and responsible with our practices and reliability measures.

The electric motor is driving the hydraulic pump at a speed that is higher than the pump’s rating. All pumps have a recommended maximum drive speed. If the speed is too high, a higher volume of oil will be needed at the suction port.

Due to the size of the suction port, adequate oil cannot fill the suction cavity in the pump, resulting in cavitation. Although this rarely happens, some pumps are rated at a maximum drive speed of 1,200 revolutions per minute (RPM), while others have a maximum speed of 3,600 RPM. The drive speed should be checked any time a pump is replaced with a different brand or model.

Every one of these devastating causes of cavitation threatens to cause major, irreversible damage to your equipment. Therefore, it’s not only critical to have proper, proactive practices in place, but also a monitoring system that can continuously protect your valuable assets, such as UE System’s UltraTrak 850S CD pump cavitation senor. These sensors regularly monitor the health of your pumps and alert you immediately if cavitation symptoms are present, allowing you to take corrective action before it’s too late.

Aeration is sometimes known as pseudo cavitation because air is entering the pump suction cavity. However, the causes of aeration are entirely different than that of cavitation. While cavitation pulls air out of the oil, aeration is the result of outside air entering the pump’s suction line.

Several factors can cause aeration, including an air leak in the suction line. This could be in the form of a loose connection, a cracked line, or an improper fitting seal. One method of finding the leak is to squirt oil around the suction line fittings. The fluid will be momentarily drawn into the suction line, and the knocking sound inside the pump will stop for a short period of time once the airflow path is found.

A bad shaft seal can also cause aeration if the system is supplied by one or more fixed displacement pumps. Oil that bypasses inside a fixed displacement pump is ported back to the suction port. If the shaft seal is worn or damaged, air can flow through the seal and into the pump’s suction cavity.

As mentioned previously, if the oil level is too low, oil can enter the suction line and flow into the pump. Therefore, always check the oil level with all cylinders in the retracted position.

If a new pump is installed and pressure will not build, the shaft may be rotating in the wrong direction. Some gear pumps can be rotated in either direction, but most have an arrow on the housing indicating the direction of rotation, as depicted in Figure 2.

Pump rotation should always be viewed from the shaft end. If the pump is rotated in the wrong direction, adequate fluid will not fill the suction port due to the pump’s internal design.

A fixed displacement pump delivers a constant volume of oil for a given shaft speed. A relief valve must be included downstream of the pump to limit the maximum pressure in the system.

After the visual and sound checks are made, the next step is to determine whether you have a volume or pressure problem. If the pressure will not build to the desired level, isolate the pump and relief valve from the system. This can be done by closing a valve, plugging the line downstream, or blocking the relief valve. If the pressure builds when this is done, there is a component downstream of the isolation point that is bypassing. If the pressure does not build up, the pump or relief valve is bad.

If the system is operating at a slower speed, a volume problem exists. Pumps wear over time, which results in less oil being delivered. While a flow meter can be installed in the pump’s outlet line, this is not always practical, as the proper fittings and adapters may not be available. To determine if the pump is badly worn and bypassing, first check the current to the electric motor. If possible, this test should be made when the pump is new to establish a reference. Electric motor horsepower is relative to the hydraulic horsepower required by the system.

For example, if a 50-GPM pump is used and the maximum pressure is 1,500 psi, a 50-hp motor will be required. If the pump is delivering less oil than when it was new, the current to drive the pump will drop. A 230-volt, 50-hp motor has an average full load rating of 130 amps. If the amperage is considerably lower, the pump is most likely bypassing and should be changed.

Figure 4.To isolate a fixed displacement pump and relief valve from the system, close a valve or plug the line downstream (left). If pressure builds, a component downstream of the isolation point is bypassing (right).

The most common type of variable displacement pump is the pressure-compensating design. The compensator setting limits the maximum pressure at the pump’s outlet port. The pump should be isolated as described for the fixed displacement pump.

If pressure does not build up, the relief valve or pump compensator may be bad. Prior to checking either component, perform the necessary lockout procedures and verify that the pressure at the outlet port is zero psi. The relief valve and compensator can then be taken apart and checked for contamination, wear, and broken springs.

Install a flow meter in the case drain line and check the flow rate. Most variable displacement pumps bypass one to three percent of the maximum pump volume through the case drain line. If the flow rate reaches 10 percent, the pump should be changed. Permanently installing a flow meter in the case drain line is an excellent reliability and troubleshooting tool.

Ensure the compensator is 200 psi above the maximum load pressure. If set too low, the compensator spool will shift and start reducing the pump volume when the system is calling for maximum volume.

Performing these recommended tests should help you make good decisions about the condition of your pumps or the cause of pump failures. If you change a pump, have a reason for changing it. Don’t just do it because you have a spare one in stock.

Conduct a reliability assessment on each of your hydraulic systems so when an issue occurs, you will have current pressure and temperature readings to consult.

Al Smiley is the president of GPM Hydraulic Consulting Inc., located in Monroe, Georgia. Since 1994, GPM has provided hydraulic training, consulting and reliability assessments to companies in t...